Philos Trans R Soc Lond B Biol Sci May 2009 PMID 19528002

Predictive coding under the free-energy principle.

Karl Friston, Stefan Kiebel

Mentions

15
Peak: 2 in Jun 2022
across 4 sources since Jun 2022

Extended reach

20,152
potential audience

Total likes

63

Video views

1,524

Mentions per month

Jun 2022 – Dec 2025

Where it's discussed

  • X / Twitter8 posts
  • News3 articles
  • YouTube2 videos
  • Reddit2 posts

AI synopsis

What people are saying

The collective discussions highlight appreciation for the article's comprehensive explanation of predictive coding and the free-energy principle, with examples like requests for tutorials and mentions of illustrations. Tone varies from analytical to supportive, signifying genuine interest and recognition of its potential impact on understanding brain function and perception.

AgreementModerate agreement

Most discussions acknowledge the importance and validity of the paper, with some expressing full support and understanding of its theories.

InterestModerate interest

Posts show a moderate interest, especially with comments about the complexity of the material and the need for additional explanations.

EngagementModerate engagement

Several users delve into specifics, such as the formalization of predictive coding and the techniques demonstrated, indicating active engagement.

ImpactModerate impact

The discussions suggest the article is considered influential within cognitive science and neuroscience circles, as reflected in comments about its theoretical significance.

Abstract in brief

  • The paper explains that the brain solves the problem of prediction and perception by creating and inverting hierarchical models of the world, which helps it interpret sensory information.
  • It uses the free energy principle, proposing that the brain minimizes a quantity called free energy to efficiently infer the causes of sensory data and recognize patterns or sequences.
  • The authors demonstrate these ideas with simulations of artificial birds that can identify and categorize birdsongs, showing that the brain's structure supports this inference process.]

Top posts

Most liked on X and Bluesky
脳太郎
@sekizui_notaro · X

『自由エネルギー原理入門』p.42の説明、多分状態ユニットと誤差ユニットの話が逆になってますね。 https://t.co/S10qGkxdem https://t.co/ZaHjkpdAZ6 https://t.co/Kq3mE5GSME フリストンの論文もそうだし、じゃないと話が通じない。

Jun 29, 2022 · 14 likes · 795 followers View post →
Julien
@ArpinGarre66002 · X

You need to understand this. Predictive coding under the free-energy principle - PMC (https://t.co/GrIcwT9ISE)

Jun 12, 2024 · 4 likes · 1,580 followers View post →
Unai Aso | Psicólogo Sanitario
@unaiaso · X

Friston, K., & Kiebel, S. (2009). Predictive coding under the free-energy principle. Philosophical transactions of the Royal Society B: Biological sciences, 364(1521), 1211-1221.

Jun 17, 2023 · 2 likes · 1 share · 2,256 followers View post →
Roberto Limongi
@roberto_limongi · X

@JulioMTNeuro Based on citations, this “old” one presents the “theory” https://t.co/BTnj3i90Od but needles to say that p coding is formally subsumed by active inference (I am assuming though that you are only interested in “passive” perception and not in “active” decision making. Right?

Oct 26, 2025 · 2 likes · 148 followers View post →
Jordan James Etem
@JordanJamesEtem · X

Friston, Karl, and Stefan Kiebel. "Predictive coding under the free-energy principle." Philosophical transactions of the Royal Society B: Biological sciences 364.1521 (2009): 1211-1221. @mcuban @bhorowitz @pmarca @MichaelDell @larryellison

Sep 14, 2022 · 1 like · 12,634 followers View post →
fronx
@fronxer · X

Today's reading attempt: Predictive coding under the free-energy principle, Karl Friston* and Stefan Kiebel. https://t.co/6v6TpagMZy The math is complicated and compressed enough that I think some sort of tutorial could be helpful. It does, however, have nice illustrations. https://t.co/w9uJyFrPjz

Jun 13, 2022 · 1 like · 547 followers View post →

All mentions

Dhawal Sharma
@thebreakingwise · X

Sources: • Friston, K., & Kiebel, S. (2009). Predictive coding under the free-energy principle. Philosophical Transactions of the Royal Society B. • Limanowski, J., & Friston, K. (2018). Seeing the self through the free-energy lens. Consciousness and Cognition.

Oct 31, 2025 · 387 followers View post →
Roberto Limongi
@roberto_limongi · X

@JulioMTNeuro Based on citations, this “old” one presents the “theory” https://t.co/BTnj3i90Od but needles to say that p coding is formally subsumed by active inference (I am assuming though that you are only interested in “passive” perception and not in “active” decision making. Right?

Oct 26, 2025 · 2 likes · 148 followers View post →
Julien
@ArpinGarre66002 · X

You need to understand this. Predictive coding under the free-energy principle - PMC (https://t.co/GrIcwT9ISE)

Jun 12, 2024 · 4 likes · 1,580 followers View post →
Ricardo GATS
@RicardoGTS1 · X

RT @unaiaso: Friston, K., & Kiebel, S. (2009). Predictive coding under the free-energy principle. Philosophical transactions of the Royal S…

Jun 17, 2023 · 1 share · 227 followers View post →
Unai Aso | Psicólogo Sanitario
@unaiaso · X

Friston, K., & Kiebel, S. (2009). Predictive coding under the free-energy principle. Philosophical transactions of the Royal Society B: Biological sciences, 364(1521), 1211-1221.

Jun 17, 2023 · 2 likes · 1 share · 2,256 followers View post →
Jordan James Etem
@JordanJamesEtem · X

Friston, Karl, and Stefan Kiebel. "Predictive coding under the free-energy principle." Philosophical transactions of the Royal Society B: Biological sciences 364.1521 (2009): 1211-1221. @mcuban @bhorowitz @pmarca @MichaelDell @larryellison

Sep 14, 2022 · 1 like · 12,634 followers View post →
脳太郎
@sekizui_notaro · X

『自由エネルギー原理入門』p.42の説明、多分状態ユニットと誤差ユニットの話が逆になってますね。 https://t.co/S10qGkxdem https://t.co/ZaHjkpdAZ6 https://t.co/Kq3mE5GSME フリストンの論文もそうだし、じゃないと話が通じない。

Jun 29, 2022 · 14 likes · 795 followers View post →
fronx
@fronxer · X

Today's reading attempt: Predictive coding under the free-energy principle, Karl Friston* and Stefan Kiebel. https://t.co/6v6TpagMZy The math is complicated and compressed enough that I think some sort of tutorial could be helpful. It does, however, have nice illustrations. https://t.co/w9uJyFrPjz

Jun 13, 2022 · 1 like · 547 followers View post →
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